Chemical-mixing hopper.



C. A. TABER.

CHEMICAL j MIXING HOPPER. MPMan-10N FILED ooT. 19, 190s.

PatenaJan. 18, 1910.

2 SHEETS-SHEET 1,

' Fig o. A.- TABER.

CHEMICAL MIXING HOPPER. APPLICATION FILED 00T. 19, 190B.

Patented Jan. 18,1910.

- '2 SHEETS-SHEET z.

Hg Jb j UN f @FFltQiili CHARLES AUGUSTUS TABER, 0F OAKLAND, CALFORNIA.

CHEItICAL-MIXING HOPPER.

To @ZZ whom it may concern:

Be it known that 1, LHARLrs AUoUs'rUs Tanna, a citizen of the United States, residing at Oakland, in the county of Alameda and State of California, have invented new and useful Improvements in a Chemicaliiixing l'iopper, of which the following is a complete specification.

My invention relates to a chemical mixing hopper for lire extinguishing purposes. The use of chemical compounds for extinguishing lires has proved eliicient and reliable, however, these compounds are usually in a limited quantity and are used more particularly to the extinguishing of small fires which have not passed beyond the point of control with a few gallons of chemicals. By the use of my device a large stream of water may be mixed with chemicals while passing through the hopper and in view of the construction iereinafter more fully set forth. The operation of the mixing of the chemicals Ymay be continuous and may be adjusted so that the desired quantity of chemical matter may be introduced into the water, or a clear stream may be passed through without any chemical matter whatever and if desired both hoppers may be placed in action at the same time.

My device may be mounted in a convenient position in a hose wagon or a specially designed truck attached to be placed in readiness for action to go along with the usual fire apparatus will more advantageously carry out the effective operation of my device, if desired the hoppers may be stationary and may be kept in convenient places acting in connection with hose racks and like lire fighting apparatus.

The objects of my invention are to provide a chemical mixing hopper adapted to effect the mixture while the stream is passing therethrough, to provide a device for mixing chemicals in a stream of water, to provide a continuously operated chemical mixing hopper ready attached to the ordinary hose and to provide a chemical mixer which may be adjusted for continuous operation. I accomplish these as well as minor objects by the construction now preferred by me and r illustrated in the accompanying drawings in which- Figure 1 is an elevation and partial section of the preferred form of my device; Fig. 2 is a transverse section of my device; Figs. 3 and i are detailed views of the covers;

Specification of Letters Patent.

Application led Gctoeer 19, 19%.

Patented Jan. 18, 1910.

Serial No. 458,494.

Figs. 5 and 6 are detailed vie Ts of tle drain plugs; Fig. 7 is a detailed view of the adjusting wheel; Fig. 8 is a view of the spanner wrench used in tightening the covers of my device; Fig. 9 is a transverse section of the mixing tube; Fig. 10 is an elevation of a moditication of my device in which the mixing tube is slidably instead of rotatably mounted; Fig. 11 is a transverse section of a modification shown in Fig. 10; Fig. 12 is a view of the adjusting lever of my device; Fig. 13 is a fragmentary view showing the disposition of the ports or apertures in the mixing tube when slidably mounted.

Similar reference numerals refer to similar parts throughout the several views of my device as illustrated in the accompanying drawings.

My invention consists essentially of a pair vof hoppers 1 and 2 having quickly adjusted covers 3 and 4 which are provided with thread portions 5 engaging the thread portions 6 in the opening 7 provided in the upper surface of the hoppers. The threads on both the covers 3 and 4 and the openings 7 are segmental thus said covers need be turned but a portion of a revolution to be adjusted tightly against their seats. The hoppers 1 and 2 are provided with inclined surfaces 8 and 9 allowing the chemical powder which is placed therein to freely gravitate to the bottom of said hoppers when saturated with water or other liquid and to thus form a chemical mixture which passes through the rows of apertures 10 and 11 provided in the mixing tube 12. The disposition of said apertures permits an adjustment and also affords a means whereby either of said hoppers 1 or 2 may be placed in operation or both may be closed as desired. r1`he hopper not in use is closed by bringing the blank surface 13 of said mixing tube 12 to completely cover either the opening 14 or 15 provided at the bottom of said hoppers 1 or 2 and by further revolving said mixing` tube 12 both of said hoppers 1 and 2 are closed from communication with the horse 1G which is secured to said mixing tube 12. To facilitate revolving said mixing tube for the adjustment described above l have provided a wheel 17 rigidly secured to said mixing tube and accessible from the exterior of my device. 1 have provided drain plugs 18 and 19 to facilitate removing the water from said hoppers 1 and 2 thus by closing one of said hoppers and draining the water therefrom said hopper may be filled while the other ofY said hoppers is in operation, the covers 3 and l may be adjusted to position by the spanner wrench 2O engaging the notches 2l provided in the rim 22 of the cover.

ln Figs. l0, 1l, 12 and 13 l have shown a modification of my device in which the mixing tube Q3 is longitudinally adjusted by the levers 2li accessible from the outside of the hoppers and adapted to bring the rows of apertures 25 which' are segmentally arranged on a mixing tube 23 in communication with the openings 2G which are disposed between the bars 2T at the base of each of said hoppers which are otherwise constructed substantially the same as heretofore described.

It is obvious that on moving both the apertures Q5 and 28 each of which may be placed into communication with the hoppers or by bringing the blanlt space 29 in communication with the openings 27 both hoppers may be closed and as the apertures and 28 which are differently disposed longitudinally on the mixing tube Q3.

l do not wish to be limited to the specific,

construction as herein set forth but wish to depart from such details as are within the scope of my patent.

Having thus described my invention what l claim as new and desire to secure by Letters Patent of the United States is:

l. ln a chemical mixing device, a pair of hoppers, a tube at the bottom of both of said hoppers provided with ports communicating with said hoppers, means for adjusting said ports in said tubes to place one or both of said hoppers out of communication with the water passing through said mixing tube and to each end of said tube and means whereby said tube may be moved permitting a continuous iiow through said ports and apertures and through said tube. to vary the contents i'lowing from said hopper with the contents flowing through said tube.

3. In a chemical mixing hopper, a. pair of hoppers having a common division Vall therebetween and an apertured bottom on each side of said division wall7 a cylindrical mixing tube movably mounted relative to said hoppers having ports communicating with said apertures and disposed in said tube to vary the opening between the hoppers and tube by the movement of said tube and to close the aperture in one or both of said hoppers whereby said hoppers may be filled and adjusted while said tube is under pressure.

In testimony whereof l have signed my name to this specification in the presence of two subscribing witnesses.

CHARLES AUGUSTUS TABER.

Witnesses HERMAN FRED SCHOTTLER7 ALBERT HENRY VORRATH. 

